Improvement in apparatus for evaporating by means of steam



vcapes' froin the coil.

RICHARD W. BENDER, OFCHICAGO, ILLINOIS(l IMPROVEMENT IN APPARATUS Forj EvAPoRATIAc Bv MEANS oF STEAM.

Specificationforming part of LettersPatchtNO. 36,267, dated August 26, 1862.

To a/Zwwm it may concern/.r Be it known that I, RICHARD WILLIAM BENDER, ofthe city of Chicago, inthe county o f.v Cook and State of Illinois, have inventedanew anduseful Improvementin Steamoillv vIlvaporatoi." -A Used in Sugar-Refineries; andl 'hereby declare that the following is afull,

clear, and .exact description thereof, reference being had toithe accompanyingdrawings, which form a part of this specification, and to 'the fletters and figures of reference' marked' My invention,consistsjin having the wastepipe through' which the spent steam escapes connected,'either with the intervention of a A receiver or without, to the boiler-,ju such a manner that by means of a pump the cooled or condensed steam and water may be forcedj back into the' boiler, which will therefore require the introduction of less Coldwater than *.would otherwise Abe needed,`.a nd thus an 'given degree of heat can bc produccdwith the- A use ot'less fuel.' A

To'enable those skilled the art to under;

stand'and use my invention, I ,Will now pro?` vcced to describe the same with par ticulari ty.A In the accompanying-drawings,-Figure- 1' represents a side elevation, :showing sections ofthe boiler, the receiver, (when use d,) and the pump.

the horizontal 'coil in the pipethrough which r the steam passes. VThis -coil is designed to be 'placed and to lie -iirthc evaporating pan or boiler, immersed. in vthe 'siru'pA or liquid sli- 'gar to be evaporated, `which evaporation of` said sugar `or sirup is occasioned by theste'am .passing'thrugh the said coil. A

ofthe known forms. A Y C 'C represent the heating pipe and coil.

W' ris the wasteApipe whereby' the steam yes- '.in ing. 1, B is the bone, constructed in any 'be connected with the pump without the .intervention of the receivc'r;A-but-if the receiver is .ns/ed, A- represents its position.

P represents the double-acting pump, which, in connection or combination 'with the pipes E Aand F, forces the cooled and condensed steam and water back into the boiler. The

pump P isoperated by a steam-engineentirely `separate and distinct from anything herein Fig. 2 is a plan view, which showsy This waste-pipe -W may .The steainfengine which drives the piston i n' operating the pump as aforesaid having nothing to do with the nature of myinvention and forming no part ofgit, I have not shown it upon-the drawings.-

At c b'c d care valves, 'the' one at e being to lprevent the contents of theboiler from escaping into the pipe marked :The manner in 4which my invent-ion operatfes is as follows: The steam, being generated in' the boiler, passeslintothe heatingpipe and coil, where, having performed its function', it

.losesits heat, andas it passes into the waste: pipe becomes converted into watery vapor rand" water, whichl collects in A,'whence by the' action of .the pump it' is forced rst'into .the chambers labove and below the piston, and

thence by the .opposite stroke into the boiler. 'At the 'upward' stroke ofthe piston the con, tents of the' receiver and waste-pipe areforced ...into the, chamber dieetlybeneathfthe piston,

and the contents ef the upper chamber are' forced into the boiler, and atthedownward stroke the contentsof thel receiverare forced 4into the upper "chamber, and lthe contents of the lower vchamber are forced 'into theboiler.v

The ,object 'of Vmyirivemti'on' is -to obtain a 'supply-of steam' for heating or boiling of a .Y Ilrigherand more uniformtemperature, and to A save fuel. The steam, when only partially condensed, being supplied to they boiler iny this manner,: o f course renders the quantity of cold water necessary very. much less, and so refqllilsless fuel toobtain a given temperature.

I claimas my inventione A The application, combination, and arrange@ lment of the receiverl A, the pipes -E and F, and the double-acting pump P, operating asdescribed; for the purposes substantially 'as set forth. n A 'RICHARD WM. BENDER.. Witnesses:

WILLIAM E. MARES, B AB. GRAY. 

